Make your own 3D Printer Mirror Print Bed (but see comments) 

I tried the Creality glass bed and found it too smooth for prints to stick to it, so returned it. I picked up these tiles and cutter from Amazon: Mirrored tiles amzn.to/2C2xStb Glass cutter amzn.to/304Ruoi *** Update: After a few weeks of use I've found a few shortcomings of using a glass/mirror sheet. Firstly, with PLA, if your print has a large footprint, you can often get warped prints. If you are using PETG then you may find that the print will not adhere to the bed unless you rough up the surface. I tried 80 grit sandpaper and it made no difference, it was still too smooth. I had some driveway paving blocks and I used the face of one of those to roughen up the surface. This has worked brilliantly. Although it looks awful, filament grips to it and just lifts off once the bed has cooled.***